Overpressure device



FIG. 1 is a side elevational view of an overpressure device showing our new design;

FIG. 2 is a front elevational view taken along line 2--2 of FIG. 1;

FIG. 3 is a rear elevational view taken along line 3--3 of FIG. 1;

FIG. 4 is a top plan view taken along line 4--4 of FIG. 1; and

FIG. 5 is a bottom plan view taken along line 5--5 of FIG. 1. 

The ornamental design for an overpressure device, substantially as shown and described. 